基于岩体完整性评价的超声–地震波速度跨尺度转换方法研究

doi:10.13722/j.cnki.jrme.2018.0612

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Abstract A method for transforming the ultrasonic velocity of the drilling core to the seismic velocity of the corresponding strata beneath the surface was proposed. According to the rock type，the ultrasonic velocity of rock blocks is converted to the seismic wave velocity using different conversion coefficients，and the velocity is modified using an empirical equation，considering the effects of water saturation，temperature and pressure. The seismic wave velocity of rock body is obtained from the seismic wave velocity of a rock block，by using the integrity coefficient Kv of rock mass and the volume joint number Jv of rock body. To testify this method，5 drilling cores were chosen from the polymetallic deposit in Huayangchuan，and the ultrasonic velocities of the samples were measured and converted into the seismic velocities according to the method. Comparisons indicate that the two sets of velocities are very well correlated in terms of the depth change.

Key words： rock mechanics rock exploration ultrasonic velocity seismic velocity drilling core underground medium wave velocity conversion

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	Articles by authors
	ZHANG Chengyuan1
	WAN Wenkai1
	2
	WANG Shuang2
	3
	SUN Xinlei3
	LIU Quansheng1
	4
	5

Cite this article:

ZHANG Chengyuan1,WAN Wenkai1,2, et al. Conversion method from ultrasonic to seismic velocity based on rock integrity assessment[J]. , 2018, 37(11): 2435-2445.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0612 OR http://www.rockmech.org/EN/Y2018/V37/I11/2435

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